/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:46,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:46,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:46,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:46,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:46,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:46,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:46,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:46,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:46,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:46,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:46,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:46,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:46,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:46,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:46,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:46,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:46,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:46,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:46,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:46,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:46,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:47,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:47,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:47,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:47,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:47,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:47,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:47,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:47,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:47,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:47,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:47,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:47,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:47,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:47,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:47,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:47,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:47,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:47,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:47,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:47,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:47,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:47,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:47,035 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:47,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:47,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:47,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:47,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:47,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:47,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:47,036 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:47,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:47,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:47,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:47,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:47,551 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:47,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c [2021-02-21 20:10:47,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3bcbb84/c2325240d0e74de1a3af7a7eb108d89a/FLAGbe6bc424a [2021-02-21 20:10:48,297 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:48,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c [2021-02-21 20:10:48,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3bcbb84/c2325240d0e74de1a3af7a7eb108d89a/FLAGbe6bc424a [2021-02-21 20:10:48,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3bcbb84/c2325240d0e74de1a3af7a7eb108d89a [2021-02-21 20:10:48,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:48,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:48,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:48,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:48,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:48,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:48,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579bd6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48, skipping insertion in model container [2021-02-21 20:10:48,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:48,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:48,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:48,899 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c[1751,1764] [2021-02-21 20:10:48,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:48,926 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:48,952 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092b.c[1751,1764] [2021-02-21 20:10:48,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:48,970 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:48,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48 WrapperNode [2021-02-21 20:10:48,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:48,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:48,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:48,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:48,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:48,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:48,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:48,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:49,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:49,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:49,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... [2021-02-21 20:10:49,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:49,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:49,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:49,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:49,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2021-02-21 20:10:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-21 20:10:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2021-02-21 20:10:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-21 20:10:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:49,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:49,620 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:10:49,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:49 BoogieIcfgContainer [2021-02-21 20:10:49,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:49,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:49,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:49,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:49,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:48" (1/3) ... [2021-02-21 20:10:49,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27264f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:49, skipping insertion in model container [2021-02-21 20:10:49,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:48" (2/3) ... [2021-02-21 20:10:49,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27264f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:49, skipping insertion in model container [2021-02-21 20:10:49,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:49" (3/3) ... [2021-02-21 20:10:49,631 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b.c [2021-02-21 20:10:49,639 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:49,644 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:49,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:49,689 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:49,690 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:49,690 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:49,690 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:49,690 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:49,690 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:49,690 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:49,690 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2021-02-21 20:10:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 20:10:49,721 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:49,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:49,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2098219990, now seen corresponding path program 1 times [2021-02-21 20:10:49,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:49,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426429616] [2021-02-21 20:10:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:49,822 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:50,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:50,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:50,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:50,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:50,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:50,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:50,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:50,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:50,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:50,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:50,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426429616] [2021-02-21 20:10:50,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:50,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:50,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883970745] [2021-02-21 20:10:50,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:50,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:50,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:50,286 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2021-02-21 20:10:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:50,675 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2021-02-21 20:10:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:50,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-02-21 20:10:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:50,692 INFO L225 Difference]: With dead ends: 161 [2021-02-21 20:10:50,692 INFO L226 Difference]: Without dead ends: 83 [2021-02-21 20:10:50,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-21 20:10:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-21 20:10:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-21 20:10:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2021-02-21 20:10:50,769 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36 [2021-02-21 20:10:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2021-02-21 20:10:50,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2021-02-21 20:10:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-21 20:10:50,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:50,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:50,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:50,773 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1457267459, now seen corresponding path program 1 times [2021-02-21 20:10:50,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:50,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612965701] [2021-02-21 20:10:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:50,778 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:50,844 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:50,918 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:50,961 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:50,961 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:50,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:50,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:50 BoogieIcfgContainer [2021-02-21 20:10:50,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:50,986 INFO L168 Benchmark]: Toolchain (without parser) took 2315.69 ms. Allocated memory was 169.9 MB in the beginning and 229.6 MB in the end (delta: 59.8 MB). Free memory was 145.1 MB in the beginning and 182.8 MB in the end (delta: -37.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:50,987 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 169.9 MB. Free memory is still 144.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:50,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.52 ms. Allocated memory is still 169.9 MB. Free memory was 144.0 MB in the beginning and 133.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:50,989 INFO L168 Benchmark]: Boogie Preprocessor took 44.34 ms. Allocated memory is still 169.9 MB. Free memory was 133.5 MB in the beginning and 131.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:50,990 INFO L168 Benchmark]: RCFGBuilder took 605.20 ms. Allocated memory is still 169.9 MB. Free memory was 131.7 MB in the beginning and 140.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:50,991 INFO L168 Benchmark]: TraceAbstraction took 1360.25 ms. Allocated memory was 169.9 MB in the beginning and 229.6 MB in the end (delta: 59.8 MB). Free memory was 140.0 MB in the beginning and 182.8 MB in the end (delta: -42.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:50,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 169.9 MB. Free memory is still 144.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.52 ms. Allocated memory is still 169.9 MB. Free memory was 144.0 MB in the beginning and 133.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.34 ms. Allocated memory is still 169.9 MB. Free memory was 133.5 MB in the beginning and 131.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 605.20 ms. Allocated memory is still 169.9 MB. Free memory was 131.7 MB in the beginning and 140.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1360.25 ms. Allocated memory was 169.9 MB in the beginning and 229.6 MB in the end (delta: 59.8 MB). Free memory was 140.0 MB in the beginning and 182.8 MB in the end (delta: -42.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 82, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = 0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] EXPR res == 0.0f && __signbit_float(res) == 0 [L82] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L83] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 17 SDslu, 70 SDs, 0 SdLazy, 106 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...